Comp Cams Keyway Adjustable Billet Timing Sets; Chevy 396-454, 0.005" Undersized DR80 Hard panel construction matches original

Hard panel construction matches original equipment dimensions and mounting

Duramax-specific design - Engineered for 6

maintains appearance season after season

Do these lug nuts fit standard wheel studs

Professional installation recommended for best fitment and performance

Comp Cams Keyway Adjustable Billet Timing Sets; Chevy 396-454, 0.005" Undersized DR80 Hard panel construction matches originalKeyway Adjustable Billet Timing Sets; Chevy 396 454, 0. 005" Undersized Features: Feature 9 keyway crank sprocket for 2 degree incremental adjustability, 8 degree maximum advance retard Pre stretched, heat treated double roller timing chain with heavy duty large pin design Includes Torrington roller thrust bearing for reduced friction Ideal for all street performance and race applications Induction hardened and precision machined steel billet gears